class Person
	attr_accessor :name
end

david = Person.new
david.name = "David"
matz = Person.new
matz.name = "Matz"
ruby = Person.new
ruby.name = "Ruby"

def david.name
	"[not available]"
end
puts david.name

module Secretive
	def name
		"[not available]"
	end
end

class << ruby
	include Secretive
end
puts ruby.name